Life indicator for coffins patent,1882. Artwork of a device designed by John Krichbaum to save a person accidentally buried alive. The person would rotate a set of handles connected to a periscope like device while a dial visible above the surface revealed the movement. A more forceful upwards push allowed air to enter the coffin. Such 'safety coffins' were a common invention at the time owing to a fear of unintentional live burial. There are no known reports of such devices actually saving an accidentally buried person | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / US Patent And Trademark Office |
Taille de l’image : | 2404 px × 3640 px |
Model Release : | Non requis |
Restrictions : | - |